Cdi QJO18A Open End Torque Wrench Head 9/16 in 58 Ft/lb

Product Description

The CDI QJO18A is an open end torque wrench interchangeable head designed for use with select CDI torque wrench handles. With a 9/16-inch drive opening and a maximum torque rating of 58 ft/lb, this head provides accurate torque application on fasteners in tight or angled access points where a standard socket would not fit. It is built for trade professionals who need repeatable torque delivery in mechanical, HVAC, plumbing, and industrial assembly work. The interchangeable design allows the head to swap onto compatible CDI handles, reducing the need for multiple dedicated torque wrenches across a single job.

This interchangeable head is suited for residential and light commercial service work where precise torque values are required on hex fasteners. Typical applications include equipment mounting bolts, flange connections, and mechanical assembly tasks that demand controlled torque rather than impact or hand-tightening. The open end configuration allows access to fasteners in confined spaces or where a box end or socket cannot engage. It pairs with a range of CDI torque wrench handles listed below under Compatibility.

Key Features

• Open end head design for fastener access in tight or obstructed locations
• 9/16-inch drive opening for common hex fastener sizes
• Maximum torque rating of 58 ft/lb for controlled tightening applications
• Interchangeable head system reduces tool count on multi-fastener jobs
• Compatible with multiple CDI torque wrench handle models

Compatibility

Designed for use with the following CDI torque wrench handles: 50NMIMH, 100NIMIMH, 75MFIMHSS, 5T-I, 10T-I, 10ST-I, and 50T-I.

Installation Notes

Installation of interchangeable torque wrench heads should be performed by a qualified technician familiar with torque tool systems. Confirm the head is fully seated and locked onto the handle before applying torque. Do not exceed the rated maximum torque of 58 ft/lb to avoid damage to the head or inaccurate torque readings. Consult the relevant equipment service manual and applicable codes for required fastener torque values on the specific application.